code: def replace(self, word: str) -> Optional[List[str]]:
      return self.dictionary.get(word, None) or self.dictionary.get(
          word.lower(), None
      )
  
file_path: AugLy/augly/text/augmenters/typo.py
imports: import json
  from typing import List, Optional
  from augly.text.augmenters.utils import detokenize, get_aug_idxes, tokenize, validate_augmenter_params
  from augly.utils import pathmgr
  from augly.utils.libsndfile import install_libsndfile
  from nlpaug.augmenter.char import KeyboardAug, RandomCharAug
  from nlpaug.augmenter.word import WordAugmenter
  from nlpaug.util import Action, Method
label_desc: Use image node_id 2 for calling the MisspellingReplacement obj's underlying member method code with example usage: obj.replace(word) and returns: unknown